PLATE XIII. 



Figs. 1-6. Euphausia similis, G. 0. Sars. 



Fig. 1. Adult male, from right side ; magnified about six times. 



Fig. 2. Anterior extremity of body, with eyes, antennulse and antennae, from above. 



Fig. 3. Inner plate of a male pleopod of first pair. 



Fig. 4. Inner plate of a male pleopod of second pair. 



Fig. 5. Extremity of tail, with caudal fan, from above. 



Fig. 6. Extremity of last caudal segment, with base of telson and uropods, from right 

 side, more highly magnified, showing the simple preanal spine. 



Figs. 7-17. Euphausia splendetis, Dana. 



Fig. 7. Adult female with spermatophores, from right side ; magnified about seven, 

 times. 



Fig. 8. Right antennular peduncle, from above. 



Fig. 9. Right antenna, from below. 



Fig. 10. Mandibular palp. 



Fig. 11. Maxilla of first pail 



Fig. 1 2 Maxilla of second pair 



Fig. 13. Inner plate of a male pleopod of first pair. 



Fig. 14. Inner plate of a male pleopod of second pair. 



Fig. 15. Anterior j^art of body, from above. 



Fig. 16. Extremity of tail, with caudal fan, from above. 



Fig. 17. Preanal spine. 



